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Accept a shared calendar invitation on iCloud.com
You can accept a calendar invitation using Calendar on iCloud.com or the Calendar app on your iPhone, iPad, iPod touch, or Mac.
Do either of the following:
In the invitation email you receive for the event, click Join Calendar.
In Calendar on iCloud.com, click
below the calendar. If you have one or more pending invitations, the button shows a number instead of an arrow.
In the calendar notification, click Join Calendar.
The shared private calendars you join appear in Calendar on iCloud.com and in the Calendar app on your iOS and iPadOS devices and your Mac, and in Microsoft Outlook on Windows computers.
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